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https://github.com/RPCS3/llvm-mirror.git
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06a6d27ef3
Code generation of VLD3, VLD4, VST3 and VST4 with register writeback is broken due to 2 separate bugs: 1) VLD1d64TPseudoWB_register and VLD1d64QPseudoWB_register are missing rules to expand them to non pseudo MIR. These are selected for ARMISD::VLD3_UPD/VLD4_UPD with v1i64 vectors in SelectVLD. 2) Selection of the right VLD/VST instruction is broken for load and store of 3 and 4 v1i64 vectors. SelectVLD and SelectVST are called with MIR opcode for fixed writeback (ie increment is access size) and call getVLDSTRegisterUpdateOpcode() to select an opcode with register writeback if base register update is of a different size. Since getVLDSTRegisterUpdateOpcode() only knows about VLD1/VLD2/VST1/VST2 the call is currently conditional on the number of element in the vector. However, VLD1/VST1 is selected by SelectVLD/SelectVST's caller for load and stores of 3 or 4 v1i64 vectors. Therefore the opcode is not updated which later lead to a fixed writeback instruction being constructed with an extra operand for the register writeback. This patch addresses the two issues as follows: - it adds the necessary mapping from VLD1d64TPseudoWB_register and VLD1d64QPseudoWB_register to VLD1d64Twb_register and VLD1d64Qwb_register respectively. Like for the existing _fixed variants, the cost of these is bumped for unaligned access. - it changes the logic in SelectVLD and SelectVSD to call isVLDfixed and isVSTfixed respectively to decide whether the opcode should be updated. It also reworks the logic and comments for pushing the writeback offset operand and r0 operand to clarify the logic: writeback offset needs to be pushed if it's a register writeback, r0 needs to be pushed if not and the instruction is a VLD1/VLD2/VST1/VST2. Reviewers: rengolin, t.p.northover, samparker Reviewed By: samparker Patch by Thomas Preud'homme <thomas.preudhomme@arm.com> Differential Revision: https://reviews.llvm.org/D42970 llvm-svn: 326570
186 lines
7.9 KiB
LLVM
186 lines
7.9 KiB
LLVM
; RUN: llc -mtriple=arm-eabi -mattr=+neon %s -o -| FileCheck %s
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; RUN: llc -mtriple=arm-eabi -mattr=+neon -regalloc=basic %s -o - | FileCheck %s
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%struct.__neon_int8x8x3_t = type { <8 x i8>, <8 x i8>, <8 x i8> }
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%struct.__neon_int16x4x3_t = type { <4 x i16>, <4 x i16>, <4 x i16> }
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%struct.__neon_int32x2x3_t = type { <2 x i32>, <2 x i32>, <2 x i32> }
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%struct.__neon_float32x2x3_t = type { <2 x float>, <2 x float>, <2 x float> }
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%struct.__neon_int64x1x3_t = type { <1 x i64>, <1 x i64>, <1 x i64> }
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%struct.__neon_int8x16x3_t = type { <16 x i8>, <16 x i8>, <16 x i8> }
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%struct.__neon_int16x8x3_t = type { <8 x i16>, <8 x i16>, <8 x i16> }
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%struct.__neon_int32x4x3_t = type { <4 x i32>, <4 x i32>, <4 x i32> }
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%struct.__neon_float32x4x3_t = type { <4 x float>, <4 x float>, <4 x float> }
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define <8 x i8> @vld3i8(i8* %A) nounwind {
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;CHECK-LABEL: vld3i8:
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;Check the alignment value. Max for this instruction is 64 bits:
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;CHECK: vld3.8 {d16, d17, d18}, [{{r[0-9]+|lr}}:64]
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%tmp1 = call %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8.p0i8(i8* %A, i32 32)
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%tmp2 = extractvalue %struct.__neon_int8x8x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int8x8x3_t %tmp1, 2
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%tmp4 = add <8 x i8> %tmp2, %tmp3
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ret <8 x i8> %tmp4
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}
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define <4 x i16> @vld3i16(i16* %A) nounwind {
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;CHECK-LABEL: vld3i16:
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;CHECK: vld3.16
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%tmp0 = bitcast i16* %A to i8*
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%tmp1 = call %struct.__neon_int16x4x3_t @llvm.arm.neon.vld3.v4i16.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_int16x4x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int16x4x3_t %tmp1, 2
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%tmp4 = add <4 x i16> %tmp2, %tmp3
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ret <4 x i16> %tmp4
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}
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;Check for a post-increment updating load with register increment.
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define <4 x i16> @vld3i16_update(i16** %ptr, i32 %inc) nounwind {
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;CHECK-LABEL: vld3i16_update:
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;CHECK: vld3.16 {d16, d17, d18}, [{{r[0-9]+|lr}}], {{r[0-9]+|lr}}
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%A = load i16*, i16** %ptr
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%tmp0 = bitcast i16* %A to i8*
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%tmp1 = call %struct.__neon_int16x4x3_t @llvm.arm.neon.vld3.v4i16.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_int16x4x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int16x4x3_t %tmp1, 2
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%tmp4 = add <4 x i16> %tmp2, %tmp3
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%tmp5 = getelementptr i16, i16* %A, i32 %inc
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store i16* %tmp5, i16** %ptr
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ret <4 x i16> %tmp4
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}
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define <2 x i32> @vld3i32(i32* %A) nounwind {
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;CHECK-LABEL: vld3i32:
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;CHECK: vld3.32
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%tmp0 = bitcast i32* %A to i8*
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%tmp1 = call %struct.__neon_int32x2x3_t @llvm.arm.neon.vld3.v2i32.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_int32x2x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int32x2x3_t %tmp1, 2
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%tmp4 = add <2 x i32> %tmp2, %tmp3
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ret <2 x i32> %tmp4
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}
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define <2 x float> @vld3f(float* %A) nounwind {
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;CHECK-LABEL: vld3f:
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;CHECK: vld3.32
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%tmp0 = bitcast float* %A to i8*
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%tmp1 = call %struct.__neon_float32x2x3_t @llvm.arm.neon.vld3.v2f32.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_float32x2x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_float32x2x3_t %tmp1, 2
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%tmp4 = fadd <2 x float> %tmp2, %tmp3
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ret <2 x float> %tmp4
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}
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define <1 x i64> @vld3i64(i64* %A) nounwind {
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;CHECK-LABEL: vld3i64:
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;Check the alignment value. Max for this instruction is 64 bits:
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;CHECK: vld1.64 {d16, d17, d18}, [{{r[0-9]+|lr}}:64]
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%tmp0 = bitcast i64* %A to i8*
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%tmp1 = call %struct.__neon_int64x1x3_t @llvm.arm.neon.vld3.v1i64.p0i8(i8* %tmp0, i32 16)
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%tmp2 = extractvalue %struct.__neon_int64x1x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int64x1x3_t %tmp1, 2
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%tmp4 = add <1 x i64> %tmp2, %tmp3
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ret <1 x i64> %tmp4
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}
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define <1 x i64> @vld3i64_update(i64** %ptr, i64* %A) nounwind {
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;CHECK-LABEL: vld3i64_update:
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;CHECK: vld1.64 {d16, d17, d18}, [{{r[0-9]+|lr}}:64]!
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%tmp0 = bitcast i64* %A to i8*
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%tmp1 = call %struct.__neon_int64x1x3_t @llvm.arm.neon.vld3.v1i64.p0i8(i8* %tmp0, i32 16)
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%tmp5 = getelementptr i64, i64* %A, i32 3
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store i64* %tmp5, i64** %ptr
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%tmp2 = extractvalue %struct.__neon_int64x1x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int64x1x3_t %tmp1, 2
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%tmp4 = add <1 x i64> %tmp2, %tmp3
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ret <1 x i64> %tmp4
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}
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define <1 x i64> @vld3i64_reg_update(i64** %ptr, i64* %A) nounwind {
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;CHECK-LABEL: vld3i64_reg_update:
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;CHECK: vld1.64 {d16, d17, d18}, [{{r[0-9]+|lr}}:64], {{r[0-9]+|lr}}
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%tmp0 = bitcast i64* %A to i8*
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%tmp1 = call %struct.__neon_int64x1x3_t @llvm.arm.neon.vld3.v1i64.p0i8(i8* %tmp0, i32 16)
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%tmp5 = getelementptr i64, i64* %A, i32 1
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store i64* %tmp5, i64** %ptr
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%tmp2 = extractvalue %struct.__neon_int64x1x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int64x1x3_t %tmp1, 2
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%tmp4 = add <1 x i64> %tmp2, %tmp3
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ret <1 x i64> %tmp4
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}
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define <16 x i8> @vld3Qi8(i8* %A) nounwind {
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;CHECK-LABEL: vld3Qi8:
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;Check the alignment value. Max for this instruction is 64 bits:
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;CHECK: vld3.8 {d16, d18, d20}, [{{r[0-9]+|lr}}:64]!
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;CHECK: vld3.8 {d17, d19, d21}, [{{r[0-9]+|lr}}:64]
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%tmp1 = call %struct.__neon_int8x16x3_t @llvm.arm.neon.vld3.v16i8.p0i8(i8* %A, i32 32)
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%tmp2 = extractvalue %struct.__neon_int8x16x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int8x16x3_t %tmp1, 2
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%tmp4 = add <16 x i8> %tmp2, %tmp3
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ret <16 x i8> %tmp4
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}
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define <8 x i16> @vld3Qi16(i16* %A) nounwind {
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;CHECK-LABEL: vld3Qi16:
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;CHECK: vld3.16
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;CHECK: vld3.16
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%tmp0 = bitcast i16* %A to i8*
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%tmp1 = call %struct.__neon_int16x8x3_t @llvm.arm.neon.vld3.v8i16.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_int16x8x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int16x8x3_t %tmp1, 2
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%tmp4 = add <8 x i16> %tmp2, %tmp3
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ret <8 x i16> %tmp4
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}
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define <4 x i32> @vld3Qi32(i32* %A) nounwind {
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;CHECK-LABEL: vld3Qi32:
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;CHECK: vld3.32
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;CHECK: vld3.32
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%tmp0 = bitcast i32* %A to i8*
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%tmp1 = call %struct.__neon_int32x4x3_t @llvm.arm.neon.vld3.v4i32.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_int32x4x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int32x4x3_t %tmp1, 2
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%tmp4 = add <4 x i32> %tmp2, %tmp3
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ret <4 x i32> %tmp4
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}
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;Check for a post-increment updating load.
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define <4 x i32> @vld3Qi32_update(i32** %ptr) nounwind {
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;CHECK-LABEL: vld3Qi32_update:
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;CHECK: vld3.32 {d16, d18, d20}, {{\[}}[[R:r[0-9]+|lr]]]!
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;CHECK: vld3.32 {d17, d19, d21}, {{\[}}[[R]]]!
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%A = load i32*, i32** %ptr
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%tmp0 = bitcast i32* %A to i8*
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%tmp1 = call %struct.__neon_int32x4x3_t @llvm.arm.neon.vld3.v4i32.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_int32x4x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_int32x4x3_t %tmp1, 2
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%tmp4 = add <4 x i32> %tmp2, %tmp3
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%tmp5 = getelementptr i32, i32* %A, i32 12
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store i32* %tmp5, i32** %ptr
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ret <4 x i32> %tmp4
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}
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define <4 x float> @vld3Qf(float* %A) nounwind {
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;CHECK-LABEL: vld3Qf:
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;CHECK: vld3.32
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;CHECK: vld3.32
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%tmp0 = bitcast float* %A to i8*
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%tmp1 = call %struct.__neon_float32x4x3_t @llvm.arm.neon.vld3.v4f32.p0i8(i8* %tmp0, i32 1)
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%tmp2 = extractvalue %struct.__neon_float32x4x3_t %tmp1, 0
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%tmp3 = extractvalue %struct.__neon_float32x4x3_t %tmp1, 2
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%tmp4 = fadd <4 x float> %tmp2, %tmp3
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ret <4 x float> %tmp4
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}
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declare %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_int16x4x3_t @llvm.arm.neon.vld3.v4i16.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_int32x2x3_t @llvm.arm.neon.vld3.v2i32.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_float32x2x3_t @llvm.arm.neon.vld3.v2f32.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_int64x1x3_t @llvm.arm.neon.vld3.v1i64.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_int8x16x3_t @llvm.arm.neon.vld3.v16i8.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_int16x8x3_t @llvm.arm.neon.vld3.v8i16.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_int32x4x3_t @llvm.arm.neon.vld3.v4i32.p0i8(i8*, i32) nounwind readonly
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declare %struct.__neon_float32x4x3_t @llvm.arm.neon.vld3.v4f32.p0i8(i8*, i32) nounwind readonly
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